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authorDavid S. Miller <davem@davemloft.net>2008-12-06 07:54:40 +0100
committerDavid S. Miller <davem@davemloft.net>2008-12-06 07:54:40 +0100
commit730c30ec646bd252a9448a66ecd51d794853513f (patch)
treec0d413860f9d8bf37374f17cfabb4911143465d7 /drivers/net/bnx2.c
parenttcp: move some parts from tcp_write_xmit (diff)
parentMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linvil... (diff)
downloadlinux-730c30ec646bd252a9448a66ecd51d794853513f.tar.xz
linux-730c30ec646bd252a9448a66ecd51d794853513f.zip
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/wireless/iwlwifi/iwl-core.c drivers/net/wireless/iwlwifi/iwl-sta.c
Diffstat (limited to 'drivers/net/bnx2.c')
-rw-r--r--drivers/net/bnx2.c35
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 182f2410c23d..0e2218dadb3d 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -3147,6 +3147,28 @@ bnx2_has_work(struct bnx2_napi *bnapi)
return 0;
}
+static void
+bnx2_chk_missed_msi(struct bnx2 *bp)
+{
+ struct bnx2_napi *bnapi = &bp->bnx2_napi[0];
+ u32 msi_ctrl;
+
+ if (bnx2_has_work(bnapi)) {
+ msi_ctrl = REG_RD(bp, BNX2_PCICFG_MSI_CONTROL);
+ if (!(msi_ctrl & BNX2_PCICFG_MSI_CONTROL_ENABLE))
+ return;
+
+ if (bnapi->last_status_idx == bp->idle_chk_status_idx) {
+ REG_WR(bp, BNX2_PCICFG_MSI_CONTROL, msi_ctrl &
+ ~BNX2_PCICFG_MSI_CONTROL_ENABLE);
+ REG_WR(bp, BNX2_PCICFG_MSI_CONTROL, msi_ctrl);
+ bnx2_msi(bp->irq_tbl[0].vector, bnapi);
+ }
+ }
+
+ bp->idle_chk_status_idx = bnapi->last_status_idx;
+}
+
static void bnx2_poll_link(struct bnx2 *bp, struct bnx2_napi *bnapi)
{
struct status_block *sblk = bnapi->status_blk.msi;
@@ -3221,14 +3243,15 @@ static int bnx2_poll(struct napi_struct *napi, int budget)
work_done = bnx2_poll_work(bp, bnapi, work_done, budget);
- if (unlikely(work_done >= budget))
- break;
-
/* bnapi->last_status_idx is used below to tell the hw how
* much work has been processed, so we must read it before
* checking for more work.
*/
bnapi->last_status_idx = sblk->status_idx;
+
+ if (unlikely(work_done >= budget))
+ break;
+
rmb();
if (likely(!bnx2_has_work(bnapi))) {
netif_rx_complete(bp->dev, napi);
@@ -4581,6 +4604,8 @@ bnx2_init_chip(struct bnx2 *bp)
for (i = 0; i < BNX2_MAX_MSIX_VEC; i++)
bp->bnx2_napi[i].last_status_idx = 0;
+ bp->idle_chk_status_idx = 0xffff;
+
bp->rx_mode = BNX2_EMAC_RX_MODE_SORT_MODE;
/* Set up how to generate a link change interrupt. */
@@ -5729,6 +5754,10 @@ bnx2_timer(unsigned long data)
if (atomic_read(&bp->intr_sem) != 0)
goto bnx2_restart_timer;
+ if ((bp->flags & (BNX2_FLAG_USING_MSI | BNX2_FLAG_ONE_SHOT_MSI)) ==
+ BNX2_FLAG_USING_MSI)
+ bnx2_chk_missed_msi(bp);
+
bnx2_send_heart_beat(bp);
bp->stats_blk->stat_FwRxDrop =